Extend free up space and propery check token expiration

[burnout87]

No description provided.

[burnout87]

I noticed that with a11f62d from #496 , the token is expected to be already decoded when read from the analysis_parameters.json file. Which is obviously a wrong assumption. So with this PR this will also be fixed

[codecov]

Codecov Report

Attention: Patch coverage is 96.66667% with 1 line in your changes missing coverage. Please review.

Project coverage is 62.05%. Comparing base (a4068ea) to head (9b47089).
Report is 11 commits behind head on master.

Files with missing lines	Patch %	Lines
cdci_data_analysis/pytest_fixtures.py	85.71%	1 Missing ⚠️

Additional details and impacted files

@@            Coverage Diff             @@
##           master     #716      +/-   ##
==========================================
+ Coverage   61.97%   62.05%   +0.08%     
==========================================
  Files          50       50              
  Lines        9115     9138      +23     
==========================================
+ Hits         5649     5671      +22     
- Misses       3466     3467       +1     

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[burnout87]

The free-up-space functionality has been extended to delete the no longer needed lock files: in the case of no more scratch_dir available for a certain job_id, the correspondent lock file will be deleted.

What do you think?